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Polyaniline-layered rutile TiO2 nanorods as alternative photoanode in dye-sensitized solar cells

Roy, Anurag; Mukhopadhyay, Soumita; Devi, Parukuttyamma Sujatha; Sundaram, Senthilarasu

Authors

Anurag Roy

Soumita Mukhopadhyay

Parukuttyamma Sujatha Devi



Abstract

In this paper, dye-sensitized solar cell (DSSC) performance of the less explored polymorph of TiO2, rutile, has been explored, and its performance has been modified with polyaniline (PANI) wrapping on the surface. For this purpose, highly crystalline rutile nanorods have been synthesized without any growth-directing substrates, employing a hydrothermal treatment. Further, to understand the phase composition and morphology, the synthesized nanorods and PANI-layered nanorods have been characterized through various physicochemical methods. The synthesized rods were implemented as photoanode material for DSSCs which exhibited a photoelectric conversion efficiency (PCE) of 4.28% with a high open-circuit voltage (VOC) of 0.84 V which is highly superior to DSSC with Degussa P25 (PCE = 3.95%) TiO2 nanoparticles. The resultant PCE of the nanorods was further enhanced to 6.23% on in situ deposition of PANI which acts as an electron-transporting layer. Introduction of conducting PANI over the rutile rod was explored as a new concept to improve the performance of photoanode material besides conventional TiCl4 treatment or scattering layer deposition.

Journal Article Type Article
Acceptance Date Dec 18, 2018
Online Publication Date Jan 14, 2019
Publication Date Jan 31, 2019
Deposit Date Mar 13, 2023
Print ISSN 2470-1343
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 4
Issue 1
Pages 1130-1138
DOI https://doi.org/10.1021/acsomega.8b02628
Keywords Nanorods, Oxides, Photonics, Plastics, Polymers